FSDH321

On Time (Max) :
Off Time (Max) :
Operating Supply Voltage :
Maximum Operating Temperature : + 85 C
Number of Outputs : 1
Mounting Style : Through Hole
Package / Case : DIP-8
Supply Current (Max) : 3 mA
On Resistance (Max) : 14 Ohms


Features:

• Internal Avalanche Rugged Sense FET
• Consumes only 0.65W at 240VAC & 0.3W load with Advanced Burst-Mode Operation
• Frequency Modulation for EMI Reduction
• Precision Fixed Operating Frequency
• Internal Start-up Circuit
• Pulse-by-Pulse Current Limiting
• Abnormal Over Current Protection (AOCP)
• Over Voltage Protection (OVP)
• Over Load Protection (OLP)
• Internal Thermal Shutdown Function (TSD)
• Auto-Restart Mode
• Under Voltage Lockout (UVLO)
• Low Operating Current (max 3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start


Application

• SMPS for STB, Low cost DVD Player
• Auxiliary Power for PC
• Adapter & Charger


Pinout




Specifications

Characteristic	Symbol	Value	Unit
Drain Pin Voltage)	VDRAIN	650	V
Vstr Pin Voltage	VSTR	650	V
Drain Current Pulsed	VDG	650	V
Gate-Source Voltage	VGS	±20	V
Drain Current Pulsed(1)	IDM	1.5	A
Continuous Drain Current (Tc=25)	ID	0.7	A
Continuous Drain Current (Tc=100)	ID	0.32	A
Single Pulsed Avalanche Energy(2)	EAS	10	mJ
Supply Voltage	VCC	20	V
Feedback Voltage Range	VFB	-0.3 to VCC	V
Total Power Dissipation	PD	1.40	°C
Operating Junction Temperature	TJ	Internally limited	°C
Operating Ambient Temperature	TA	-25 to +85	°C
Storage Temperature	TSTG	-55 to +150	°C

Description

Each product in the FSDx321 (x for H, L) family consists of an integrated Pulse Width Modulator (PWM) and Sense FET, and is specifically designed for high performance off- line Switch Mode Power Supplies (SMPS) with minimal external components. FSDx321 are integrated high voltage power switching regulators which combine an avalancherugged Sense FET with a current mode PWM control block.The integrated PWM controller features include: a fixed oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/turn-off driver, Thermal Shut Down (TSD) protection, Abnormal Over Current Protection (AOCP) and temperature compensated precision current sources for loop compensation and fault protection circuitry. When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSDx321 devices reduce total component count, design size, weight while increasing efficiency, productivity and system reliability. Both devices provide a basic platform that is well suited for the design of cost-effective flyback converters. 

Parameters:

Technical/Catalog Information	FSDH321
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
Packaging	-
Package / Case	8-DIP
Power (Watts)	17W
Voltage - Input	9 ~ 20 V
Voltage - Output	650V
Frequency Range	90 ~ 110kHz
Operating Temperature	25°C ~ 85°C
Output Isolation	Isolated
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	FSDH321 FSDH321